<html><head><title>To manage relationships</title><meta name="HandheldFriendly" content="True"></head><body>To manage relationships<br><br><b>alter</b> <b>role</b> role { <b>add</b> | <b>drop</b> } <b>exclusive</b> { <b>membership</b> | <b>activation</b> } role</body></html>